316440621 has 16 divisors (see below), whose sum is σ = 535772800. Its totient is φ = 180823104.

The previous prime is 316440599. The next prime is 316440643. The reversal of 316440621 is 126044613.

316440621 is a `hidden beast` number, since 31 + 6 + 4 + 4 + 0 + 621 = 666.

It is an interprime number because it is at equal distance from previous prime (316440599) and next prime (316440643).

It is not a de Polignac number, because 316440621 - 2¹⁸ = 316178477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316440661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 836956 + ... + 837333.

It is an arithmetic number, because the mean of its divisors is an integer number (33485800).

Almost surely, 2^316440621 is an apocalyptic number.

It is an amenable number.

316440621 is a deficient number, since it is larger than the sum of its proper divisors (219332179).

316440621 is a wasteful number, since it uses less digits than its factorization.

316440621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674305 (or 1674299 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 316440621 is about 17788.7779512815. Note that the first 3 decimals coincide. The cubic root of 316440621 is about 681.4448954935. Note that the first 3 decimals are identical.

The spelling of 316440621 in words is "three hundred sixteen million, four hundred forty thousand, six hundred twenty-one".